Target PLMN Intermediary for Roaming PDU Session Latency
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing protocol data unit sessions across different public land mobile networks, leading to increased latency and service failures during roaming scenarios.
Innovation Solution
The proposed solution involves an apparatus and method that enable the reception of signalling for establishing protocol data unit sessions at a target public land mobile network, and the transfer of associated data between this network and a visitor public land mobile network, where the user equipment is registered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protocol data unit sessions are managed through home public land mobile network during roaming, then service consistency is maintained, but latency increases and service failures occur due to cross-country traffic
Solution Approach 1:
The patent introduces a target public land mobile network as an intermediary entity that receives signalling from the home public land mobile network and handles local service delivery. This mediator enables service consistency while avoiding direct cross-country traffic between the visitor public land mobile network and home public land mobile network, thereby reducing latency.
Solution Approach 2:
The patent segments the session management function by separating it from the data transfer path. The home public land mobile network retains session management control, while the target public land mobile network handles actual data transfer locally. This segmentation allows service consistency to be maintained through centralized control while latency is reduced through localized execution.
2Extent of automation
If protocol data unit sessions are routed through home public land mobile network, then service management is centralized, but service failures increase due to cross-country traffic dependencies
Solution Approach 1:
The target public land mobile network acts as an intermediary that localizes service delivery while the home public land mobile network maintains centralized session management. This architecture reduces dependency on cross-country traffic for data transfer, thereby reducing service failures while preserving centralized control.
Solution Approach 2:
The patent applies local quality by enabling the target public land mobile network to handle service delivery locally rather than requiring all traffic to traverse the home public land mobile network. This localized approach reduces the impact of cross-country traffic issues while maintaining centralized management policies.
3Reliability
If all services are hosted by home public land mobile network, then service consistency is ensured, but network complexity and cross-country traffic increase
Solution Approach 1:
The patent segments the network architecture by introducing a target public land mobile network that hosts specific services locally. This segmentation reduces network complexity by avoiding the need for the home public land mobile network to directly host and manage all services, while service consistency is maintained through coordinated session management.
Solution Approach 2:
The target public land mobile network serves as an intermediary that hosts services locally, reducing the burden on the home public land mobile network and simplifying the overall network architecture. This intermediary approach maintains service consistency through standardized interfaces and session management while reducing cross-country traffic.
Data Source
AI summary
There is provided an apparatus comprising: means for receiving, at a target public land mobile network, signalling for establishing a protocol data unit session for a first service for a user equipment, wherein the first service is hostable by the target public land mobile network and a home public land mobile network, and means for causing data associated with the protocol data unit session for the first service to be transferred between the target public land mobile network and a visitor public land mobile network, wherein the user equipment is registered with the visitor public land mobile network.